Regular dormancy breaking method for dioscorea opposita thunb seed tuber

Abstract

The invention discloses a regular dormancy breaking method for dioscorea opposita thunb seed tuber. The regular dormancy breaking method comprises: naturally drying mature, pest-free and damage-free dioscorea opposita thunb tuber blocks in the sun, placing into a warehouse, and storing, wherein the cold storage time is determined according to a seeding time; and 7-10 days before seeding, taking out the dioscorea opposita thunb tuber blocks, carrying out outdoor air drying, cutting into segments according to the requirement, carrying out disinfection treatment with an agent, inducting germination with a chemical agent, placing in a sand pile and carrying out germination, or carrying out direct seeding germination, and achieving germination seedling emergence after 15-20 days. According to the present invention, with the method, the regular dormancy breaking can be achieved according to the planting time schedule, the dormancy breaking germination rate can achieve more than 90%, the seedling emergence rate is more than 85%, the planting season and the harvesting marketing time can be adjusted, and the economic benefits can be improved; and the seed source problem of the dioscorea opposita thunb in the southern China can be solved so as to seed in the winter while harvest in the summer, the early seeding seedling emergence in the northern region can be achieved, the effective growth period can be increased, and the yield and the quality can be improved.

Description

technical field

[0001] The invention relates to the technical field of Chinese yam seed potato, in particular to a method for breaking sleep at regular intervals of Chinese yam seed potato. Background technique

[0002] Chinese yam (Dioscorea opposita Thunb.) is also known as Chinese yam, Chinese yam, native potato, yam, sweet potato, and Yuyan. It is the dry rhizome of yam yam. Huaishan is rich in nutrition and has a good therapeutic effect. In recent years, people have paid more and more attention to nutrition and health, and Chinese yam has also been sought after by people. The demand for yam began to exceed supply, and the price gradually increased. Therefore, how to scientifically plant Chinese yam is a topic worth studying.

[0003] Yam seed potatoes are dormant. Generally, they are harvested in October-November of the current year and can only germinate in March of the next year. The dormancy period lasts for 4-5 months. are strictly restricted. Therefore, if "Y...